Dr Gene Ma, MD - Medicare Internal Medicine in San Jose, CA

Dr Gene Ma, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in San Jose, California. He went to Stanford University School Of Medicine and graduated in 2011 and has 13 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Permanente Medical Group Inc and his current practice location is 270 International Cir Bldg 3, San Jose, California. You can reach out to his office (for appointments etc.) via phone at (408) 972-7000.

Dr Gene Ma is licensed to practice in California (license number A122085) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1316238579.

Contact Information

Dr Gene Ma, MD
270 International Cir Bldg 3,
San Jose, CA 95119
(408) 972-7000
Not Available

Map and Direction




Physician's Profile

Full NameDr Gene Ma
GenderMale
SpecialityInternal Medicine
Experience13 Years
Location270 International Cir Bldg 3, San Jose, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Gene Ma attended and graduated from Stanford University School Of Medicine in 2011
  NPI Data:
  • NPI Number: 1316238579
  • Provider Enumeration Date: 04/22/2011
  • Last Update Date: 02/11/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 6002113305
  • Enrollment ID: I20181108001904

Medical Identifiers

Medical identifiers for Dr Gene Ma such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1316238579NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology A122085 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Kaiser Foundation Hospital-san JoseSan jose, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Permanente Medical Group Inc89219102257800

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Gene Ma allows following entities to bill medicare on his behalf.
Entity NamePermanente Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073606299
PECOS PAC ID: 8921910225
Enrollment ID: O20031104000710

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Gene Ma is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Gene Ma, MD
270 International Cir Bldg 3,
San Jose, CA 95119-1130

Ph: (408) 972-7000
Dr Gene Ma, MD
270 International Cir Bldg 3,
San Jose, CA 95119

Ph: (408) 972-7000

Reviews and Comments


Internal Medicine Doctors in San Jose, CA

Dr. Arunasri Kelleti, M.D.,
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Practice Location: 1333 Meridian Ave, San Jose, CA 95125
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Assefa Worku, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 250 Hospital Pkwy, 260 International Circle, San Jose, CA 95119
Phone: 408-972-7000    Fax: 408-363-4906
Dr. John J Redinski, DO
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Practice Location: 225 N Jackson Ave, San Jose, CA 95116
Phone: 408-347-4051    
Jenny Liu, D.O.
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Practice Location: 751 S. Bascom Ave., San Jose, CA 95128
Phone: 408-885-5000    
Dr. Komal J Bhatt, MD
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Practice Location: 225 N Jackson Ave, San Jose, CA 95116
Phone: 408-259-5000    
Dr. Alexander D Doan, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 105 N Bascom Ave, #103, San Jose, CA 95128
Phone: 408-998-2890    Fax: 408-998-2897
Eamonn Patrick Dunphy, MD
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Medicare: Not Enrolled in Medicare
Practice Location: 751 S Bascom Ave, Radiation Oncology, San Jose, CA 95128
Phone: 408-885-4150    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

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